Yup... Military Police (MP) is a combat vocation drawing combat
pay. You will be given S$1,897 as a recruit and after 31 weeks of
training, S$2,160 as a 3SG...
Consider carefully, you won't wanna regret your decision,
especially if you're on JPSDS... I would recommend that you
experience BMT first before deciding whether a military career is
suitable for you... it's never too late...
To me (personal view), MP is a Liang3 Tou2 Bu4 Zhao2 An4
vocation...
Firstly, considering it as a law enforcement career, it's nowhere
near a SPF/CNB/SPS career where you get better recognition,
authority and exposure...
Secondly, as a military career, although it's a combat vocation, it
does not expose you to too much of actual combat... plus there's
little recogition, lesser overseas expedition chances and slower
pace of promotion compared to larger formations...
my point is, being a MP is somewhat a unique career... but dun take
it as a alternative to a conventional law enforcement or military
career... if you're happy with performing during NDP/SAF day,
arresting ppl for AWOL or looking after the guard room... by all
means go ahead 
